LQR2G392MSEHBN

The LQR2G392MSEHBN is a screw‑terminal aluminum electrolytic capacitor from Nichicon’s LQR series, designed for high‑voltage power electronics. It provides 3.9 mF capacitance at 400 V in a radial can with screw terminals, optimized for applications that demand high ripple handling and robust charge–discharge performance.

Typical use cases include high‑frequency regenerative circuits for AC servomotors and general inverters, equipment operating in voltage‑fluctuating environments, and rectifier circuits such as voltage doublers. Key value propositions include high ripple current capability, a specified 5000‑hour endurance at 85°C, and RoHS compliance.

Key Features

• High Voltage / High Capacitance — 3.9 mF nominal capacitance rated for 400 V, suitable for DC bus and energy‑storage roles in power systems.
• Screw‑Terminal Radial Can — Robust screw terminals for secure, serviceable electrical connections in powered equipment.
• Wide Operating Temperature — Specified for −25°C to +85°C operation to support a variety of industrial environments.
• High Ripple Current Handling — Rated ripple current of 15.3 A at 120 Hz and 21.42 A at 10 kHz, enabling effective smoothing in high‑frequency applications.
• Low ESR — Equivalent series resistance of 150 mΩ at 120 Hz to minimize losses and heating under ripple stress.
• Endurance and Charge–Discharge Durability — Rated for 5000 hours at 85°C with D.C. bias plus rated ripple current; also specified for 20 million charge–discharge cycles (ΔV = rated × 0.3, 3 Hz) at room temperature.
• RoHS Compliant — Meets RoHS directive (2011/65/EU, (EU)2015/863) requirements.

Typical Applications

• Motor Drives and Regenerative Systems — Energy buffering and regenerative voltage handling for AC servomotor drives using the capacitor’s high ripple and charge–discharge endurance.
• Inverters and Power Conversion — DC bus smoothing and transient energy support in general inverter designs exposed to fluctuating voltages.
• Rectifier Circuits (Voltage Doubler) — Suitable for rectifier stages where high DC voltage and stable capacitance are required under stress.
• Industrial Power Supplies — Bulk energy storage and ripple suppression in industrial equipment that requires reliable performance at elevated temperatures.

Unique Advantages

• High ripple tolerance: Measured ripple currents of 15.3 A (120 Hz) and 21.42 A (10 kHz) reduce the need for parallel capacitors in many designs.
• Long endurance at elevated temperature: 5000 hours at 85°C under rated stress provides predictable life characteristics for industrial systems.
• Low ESR for improved efficiency: 150 mΩ ESR at 120 Hz lowers I²R losses and thermal stress during high‑ripple operation.
• Durable charge–discharge behavior: Qualified for 20 million charge–discharge cycles with defined limits on capacitance change, tan δ, and leakage current.
• Serviceable screw‑terminal package: Radial can with screw terminals enables secure mechanical and electrical connections for maintenance and replacement.
• Regulatory compliance: RoHS conformity supports deployment in regulated markets.

Why Choose LQR2G392MSEHBN?

The LQR2G392MSEHBN targets engineers designing high‑voltage power electronics who need a reliable, serviceable capacitor with demonstrated ripple and charge–discharge endurance. Its combination of 3.9 mF at 400 V, low ESR, and high ripple current ratings makes it suitable for DC bus smoothing, regenerative energy capture, and rectifier applications where voltage fluctuation and frequent cycling are expected.

Specified endurance data and defined leakage/tan δ limits provide verifiable performance parameters for lifetime and reliability planning. For designs that prioritize predictable thermal and electrical behavior under stress, this screw‑terminal LQR series capacitor delivers a practical balance of capacitance, voltage rating, and industrial durability.

Request a quote or submit an inquiry to sales for pricing, availability, and application support for the LQR2G392MSEHBN.